Home / 30,531.51-45,737.64-21,042.13

Finding the Fourth Proportional to 30,531.51, 45,737.64 and 21,042.13

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Solution

The fourth proportional to 30,531.51, 45,737.64 and 21,042.13 is: 31,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.51 : 45,737.64 = 21,042.13 : x
  2. Step 2: Convert to fraction form
    30,531.51/45,737.64 = 21,042.13/x
  3. Step 3: Cross multiply
    30,531.51x = 45,737.64 × 21,042.13
  4. Step 4: Simplify right side
    30,531.51x = 962,417,366.77
  5. Step 5: Solve for x
    x = 962,417,366.77/30,531.51
  6. Step 6: Final answer
    x = 31,522.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.